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Question: Light-rail passenger trains that provide transportation within and between cities speed up and SLOW down with a nearly constant (and quite modest) acceleration. A train travels through a congested part of town at 6.0m/s . Once free of this area, it speeds up to 13m/s in 8.0 s. At the edge of town, the DRIVERagain accelerates, with the same acceleration, for another 16 s to reach a higher cruising speed.
Part A: What is the final speed?
I known the correct answer but I need to know how to get that. Thanks in advance! Express your answer to two significant figures and include the appropriate units.
A generator has a terminal voltage of 107 V when it delivers 18.0 A and 106 V when it delivers 30.0 A. Calculate the emf () and the internal resistance (r) of the generator. = 1 V r = 2 Your response differs from the correct answer by more than 100%.
A 69.3-kg circus performer is fired from cannon that are elevated at an angle of 40.4° above the horizontal. The cannon uses strong elastic bands to propel the performer, much in the same way that a slingshot fires a stone.
Suppose you have a gamma ray photon of wavelength 0.0001 nm that hits a muon. If the exiting gamma ray comes out at 30°, what is the wavelength of the exiting photon
When mass M is tied to the bottom of a long, thin wire suspended from the ceiling, the wire's second-harmonic frequency is 150Hz . Adding an additional 1.5kg to the hanging mass increases the second-harmonic frequency to 270Hz.
a ray of light from the coin travels to the surface of the liquid and is refracted as it enters into the air. how fast is the light traveling in the liquid
Suppose a Proton is accelerated through a potential difference of 10 Gigavolts. Determine the proton's final kinetic energy
Two identical point charges are fixed to diagonally opposite corners of a square that is 0.495 m on a side. How much work is done by the electric force as one of the charges moves to an empty corner
An airplane needs to reach a velocity of 407 km/h to take off. On a 2000m runway, what is the least acceleration necessary for the plane to take flight.
A 1.0 cm wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 550 nm. What are the angles of the first two diffraction orders
A lamp hangs vertically from a cord in a descending elevator that decelerates at 3.2 m/s2. If the tension in the cord is 84 Newton, find what is the lamp mass
A 8.02 -m ladder with a mass of 21.2 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 260 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular a..
speed of 39.0 m/s through a school zone, exceeding the posted speed limit. Find the distance required for the policeman to overtake the motorist
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